Password change for existing bootworks installer

I have a dell e6520 lapop, well a number of them. They seem to be very finicky abotu the driver used for automation boot in to Win PE

I had a working bootworks installer but we had to change the admin password and so now things fail when it comes to authentication.

Is there a way to change the password in an existing bootworks installer or a way to find out the exact driver that was used?

I have tried getting drivers for this model of network adaptor from Intel and dell and it doesn't like anything to the point of not even hitting the DOS screen in automation boot.